print("请求操作##################################################start")
# Get urllib的request模块可以非常方便地抓取URL内容，也就是发送一个GET请求到指定的页面，
# 然后返回HTTP的响应

from urllib import request

with request.urlopen('http://download.kugou.com/') as f:
    data = f.read()
    print('Status:', f.status, f.reason)
    for k, v in f.getheaders():
        print('%s: %s' % (k, v))
    print('Data:', data.decode('utf-8'))

# 如果我们要想模拟浏览器发送GET请求，就需要使用Request对象，通过往Request对象添加HTTP头，我们就可以把请求伪装成浏览器。例如，模拟iPhone 6去请求豆瓣首页
req = request.Request('http://www.douban.com/')
req.add_header('User-Agent',
               'Mozilla/6.0 (iPhone; CPU iPhone OS 8_0 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/8.0 Mobile/10A5376e Safari/8536.25')
with request.urlopen(req) as f:
    print('Status:', f.status, f.reason)
    for k, v in f.getheaders():
        print('%s: %s' % (k, v))
    print('Data:', f.read().decode('utf-8'))

 # 如果要以POST发送一个请求，只需要把参数data以bytes形式传入
# 我们模拟一个微博登录，先读取登录的邮箱和口令，
# 然后按照weibo.cn的登录页的格式以username = xxx & password = xxx的编码传入：
#
# from urllib import request, parse
#
# print('Login to weibo.cn...')
# email = input('Email: ')
# passwd = input('Password: ')
# login_data = parse.urlencode([
#     ('username', email),
#     ('password', passwd),
#     ('entry', 'mweibo'),
#     ('client_id', ''),
#     ('savestate', '1'),
#     ('ec', ''),
#     ('pagerefer', 'https://passport.weibo.cn/signin/welcome?entry=mweibo&r=http%3A%2F%2Fm.weibo.cn%2F')
# ])
#
# req = request.Request('https://passport.weibo.cn/sso/login')
# req.add_header('Origin', 'https://passport.weibo.cn')
# req.add_header('User-Agent',
#                'Mozilla/6.0 (iPhone; CPU iPhone OS 8_0 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/8.0 Mobile/10A5376e Safari/8536.25')
# req.add_header('Referer',
#                'https://passport.weibo.cn/signin/login?entry=mweibo&res=wel&wm=3349&r=http%3A%2F%2Fm.weibo.cn%2F')
#
# with request.urlopen(req, data=login_data.encode('utf-8')) as f:
#     print('Status:', f.status, f.reason)
#     for k, v in f.getheaders():
#         print('%s: %s' % (k, v))
#     print('Data:', f.read().decode('utf-8'))


# 如果还需要更复杂的控制，比如通过一个Proxy去访问网站，我们需要利用ProxyHandler来处理，示例代码如下：
# proxy_handler = request.ProxyHandler({'http': 'http://www.example.com:3128/'})
# proxy_auth_handler = request.ProxyBasicAuthHandler()
# proxy_auth_handler.add_password('realm', 'host', 'username', 'password')
# opener = request.build_opener(proxy_handler, proxy_auth_handler)
# with opener.open('http://www.example.com/login.html') as f:
#     pass
print("请求操作##################################################end\n")
